Предмет: Алгебра, автор: frostik028

Найдите значение выражения 9^4.5b/9^6.5b при b = 0.5

PrЯnicheg: b относится к степени?

frostik028: Да

Ответы

Автор ответа: PrЯnicheg

Если b относится к степени:

9^4,5b /9^6,5b = 9^(4,5b-6,5b)= 9^(-2b)

При b=0,5, 9^(-2*0,5)=9^(-1)=1/9

Если b не отностися к степени, то 9^4,5 b/ 9^6,5 b= 9^(4,5-6,5)=9^(-2)=1/9^2=1/81

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